18465534 has 24 divisors (see below), whose sum is σ = 40095432. Its totient is φ = 6141840.

The previous prime is 18465523. The next prime is 18465563. The reversal of 18465534 is 43556481.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10969 + ... + 12539.

It is an arithmetic number, because the mean of its divisors is an integer number (1670643).

Almost surely, 2^18465534 is an apocalyptic number.

18465534 is an abundant number, since it is smaller than the sum of its proper divisors (21629898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18465534 is a wasteful number, since it uses less digits than its factorization.

18465534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232 (or 2229 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 18465534 is about 4297.1541745672. The cubic root of 18465534 is about 264.3142779243.

The spelling of 18465534 in words is "eighteen million, four hundred sixty-five thousand, five hundred thirty-four".